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tguilbert authored
WMPI owns an instance of PipelineImpl and passes its address to a PipelineController. WMPI calls method on both |pipeline_| and |pipeline_controller_|. This CL moves the ownership of PipelineImpl to the PipelineController, and exposes the rest of the Pipeline interface through the PipelineController. This will simplify reasoning about Pipeline callbacks and states changes by forcing all calls from WMPI to go through |pipeline_controller_|. bug= Review-Url: https://codereview.chromium.org/2689863002 Cr-Commit-Position: refs/heads/master@{#452764}
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